public class Main { public static void main(String[] args) throws Exception { BufferedWriter out1 = new BufferedWriter(new FileWriter("LC")); //新建文件 out1.write("string to be copied/n"); //向文件中写入数据 out1.close(); //关闭流 InputStream in = new FileInputStream(new File("LC")); //读取流 OutputStream out = new FileOutputStream (new File("LC")); //新建输出流 byte[] buf = new byte[1024]; int len; while ((len = in.read(buf)) > 0) { out.write(buf, 0, len); //写入数据 } in.close(); out.close(); BufferedReader in1 = new BufferedReader(new FileReader("destnfile")); String str; while ((str = in1.readLine()) != null) { System.out.PRintln(str); } in1.close(); } }